Milk heater and aerator.



Patented Apr. I0, |900. G. F. SIMMUNDS. mu( HEATER'AND AEnAToR.

(Application filed Apr. 1, 1899.) (No Model.) 2 Sheets-Sheet l.

a, f 2 l l l 7 Z 0 o M n J oa d 2 ....1 W n 2 :S: IW f .J ym. 1 v :r I: ,0, 0 j( Y 2 M l a o 2 z a.

2 2 1 a/,v X ,/f l, o L, A0 2 Z 2 a a f )fr @um 2. f 0 2. IIVN. .l ...Il j .3 o L w .w/ Av 11.0 0 2 I -I M, m im F Q J1 i n? l 7 7N Z me Nnnnls PETER: eo.. Puooumo.. wAsHmoYuu. n. c.

No. 647.|2|. Patented Apr.` lo, |900. G. F. slMmuNns.

MILK HEATER AND AERATOR.

(Application filed Apr. 1, 1899.) (N0 Model.) 2 Sheets-She 2.

f ZS 12;,1,

Yfzfse s.

Tn: Nonms Prsns co., FHoTaLwHva.. wAsHmcrmN. D. c.

' STATES GEORGE E. sIMMoNDs, OE LIToI-IEIELD, MINNESOTA.

MILK HEATER AND AERATOE.

SPECIFICATION forming part of Letters Patent No. 647,121, dated April 1o, 1900.

Application iiled April l, 1899.

To @ZZ whom t may concern:

Be it known that I, GEORGE F. SIMMONDs, a citizen of the United States, residing at Litchfield, in the county of Meeker and State of Minnesota, have invented certain new and useful Improvements in Milk Heaters and Aerators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

To those familiar with the creamery business it is well known that it is desirable to heat the fresh milk and to aerate the same. before the milk has passed to the separator.

My invention has for its object to provide an efficient machine for accomplishing the above-named results. To this end my invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like notations refer to like parts throughout the several views.

Figure 1 is a view in elevation, with some parts broken away and others shown in section, illustrating the preferred form of my Inachine. Fig. 2 is avertical section on the line x2 m2 of Figs. 1 and 5. Fig. 3 is a vertical section on the line x3 fc3 of Fig. 5, or at right angles to the section shown in Fig. 2. Fig. 4 is a bottom plan view of the lower end cap of the heater-shell removed. Fig. 5 is a plan view ofthe machine with some parts broken away and others shown in section.

The numeral 1 represents a suitable receptacle, shown as divided by a vertical partition 2 into a pair of compartments ct and c, both of which are open at their top to the atmosphere and serve, respectively, as the receiving and the discharge chambers of the aerator. The receiving-chamber a is shown as provided near its top with an overflow outlet-pipe 3. The discharging-chamber c is shown as provided near its bottom with an outlet-pipe 4, which leads to the separator. (Not shown.)

The milk is introduced into receiving-chamber a through a pipe 5, connected with the storage vat or receptacle, (not shown,) and 5o through which whenrunning the fresh milk flows, either by gravity or by some means for Serial 170.711.324. (No model.)

forcing the circulation, such as apump. (Not shown.)

To the under surface of the aerator, as shown, is rigidly secured the upper end of a heater-shell 6. This shell 6 may be secured to the bottom of the aerator in any suitable way. It is shown as riveted thereto and as reinforced by a suitable brace or braces 7. The shell 6 is provided with an upper tube-sheet 8, flush with the rim of the shell 6, and with a lower tube-sheet 9, set inward a short distance from the lower end of the shell. The sheets 8 and 9 are connected by tubes 10, which form part of the circulating connections for the milk, as will later more fully appear. The downward extension of the heatershell 6 is closed at its lower end by a suitable cap 11, which telescopes therewith and is provided with a suitable gasket 12, preferably of cork, for insuring a tight joint between the shell and the cap when the parts are clamped together. The cap 11 is provided on its outer or under surface with a pair of cross-bars 13, notched at their outer ends, as best shown in Fig. 4, and adapted to be engaged by nutted draw-bolts 14, pivoted to hinge-lugs 15, which are rigidly secured to the shell 6, as best shown in Fig. 1. The notched ends of the bars 13 project, of course, beyond the rim of the cap 11 for engagement with the draw-bolts 14, as shown in Figs. 1, 2, and 3.

The downward extension of the shell 6 be-A low the tube-sheet 9, in cooperation with the v cap 11, affords a chamber b below the tubes 10, which cooperates as one of the chambers for the circulation of the milk.

The opposite end portions of the shell 6 are connected by a water circulating pipe 16. The pipe 16 is tapped by a steam-supply pipe 17, leading to a suitable source of supply and provided with a suitable hand-valve 18. The steanrsuppl y pipe 17 taps the water-circulating pipe 16 in such a way as to discharge the steam within the pipe 16 in the direction of movement desired for the water in its travel through said pipe 16.

At some suitable point the shell 6 is tapped by a pipe 19, which extends upward to a point above the level of the water within the shell. This pipe 19 serves for the exhaust of the steam and for filling the shell 6 with water.

At its upper end the pipe 19 is shown as provided with a section 2O in the form of a double cone and a section 21 in the form of a single cone. These conical sections 2O serve as expansion-chambers for the steam and splashchambers for the water, with baffle plates or surfaces which prevent the water from being ejected by the steam.

At its lower end the shell 6 is shown as provided with a waste-cock 22, and at its upper end the said shell is provided with an air-vent valve 23, as shown best in Fig. 1.

The machineis designed to stand in an upright position and is preferably suspended from some overhead support. As shown, the aerating-receptacle 1 and the heater-shell 6 are both of cylindrical form, with the latter of less diameter than the former. I-Ience the aerator 1 projects beyond the top of the heatershell G in all directions and affords a convenient means for the attachment of the lower bars 24 of suitable hangers 25, secured to an overhead support. (Not shown.) In this way the machine is held at a suitable distance above the door, so as to permit ready access to the interior of the heater when desired by removing the lower end cap 11.

IIaving regard now to the action or operation of the machine,it is obvious that the Q ters Patent of the United States, is as follows:

milk will pass from the receiving-chamber a of the aerator down through those members ;prising in combination, an upper end recep- ;tacle divided into receiving and discharge chambers, a and c, respectively,by thetrans-` :verse vertical partition 2, the heater directly Vbelow said upper end receptacle comprising of the tubes 10 which terminate above in registration with the openings in the bottom of-y compartment a of the aerator, and thence will pass into the lower end chamber b and back upward through the other set of said tubes 10, which terminate above in registra*- tion with the openings in the bottom of the discharging-compartment c of the aerator. Thence the milk will pass out through the discharge-pipe 4t,leadin g to the separator. From the foregoing it is obvious that the milk passes twice through the hot-water heater in its movement or circulation from the receivingchamber c to the discharging-chamber c of the aerator. It is also obvious that this circulation is effected under the action of gravity. As both chambers a and c are open at their tops, the atmosphere has free access to the milk in both chambers a and c of the aerator. I-Ience opportunity is afforded for the com mingling of a large quantity of ai r with the milk in the course of its circulation.

The improved form of heater herein disclosed as part of this apparatus is a highlyimportant feature for the purpose hadin view. It is of course well known that hot water is V thebest medium for heating the milk, as all maintain a uniform temperature throughout the body of the water. By myimprovements herein disclosed I overcome this diiiculty.

By actual practice I have found that the wa' ter will be continuously circulated through the shell 6 and the pipe 16 under the action of the steam from the steam-supply pipe 17 and that the water will be of uniform teniperature in all parts of the shell 6. Hitherto the hot water has accumulated at the top of all water-heaters and a very considerable difference in temperature was noticeable between the top and bottom of the water column. With myimproved heater herein disclosed the temperature of the water is uniform throughout. The circulation of course is rapid and is induced by the flow of the steam within the pipe 16 from the outlet or discharge nozzle of the steam-pipe 17. y

By actual experience I have demonstrated the efficiency of the entire apparatus herein disclosed for the purposes had in View.

It will be understood, of course, that the machine is capable of modifications in form and the details may be changed without departing from the spirit of my invention.

It is of course obvious that thepurpose of the' air-vent valve 23 is to permit the escape of air from the heater when filling the same with water. The water-level is shown at e in E Figs. 2 and 3.

What I claim, and desire to secure by Let-V 1. An apparatus for heating liquids comthe shell 6 with the bottom chamber b, the

`tubes 10 connecting the chambers a, b and c, `as described, the outside water-circulating pipe 16 connecting the upper and lower end portions of the shell 6, and the steam-supply pipe 17 tapping said circulating-pipe 16 and discharging therein, in the desired direction of the movement ofthe water, substantiallyV as described. v

2; The combination with a hot-water heater, comprising a closed vertical shell, having its end portions connected by an outside watercirculating pipe, which water-pipe is tapped by a steam-supply pipe discharging therein, in the direction of movement desired for the water, of an aerator having separate receiving and discharge chambers open. to the atmosphere, which aerator is of larger crosssection than the hot-water heater and is attached to the upper end of the heater, and milk circulating connections, extending through the body of said heater and connecting the said receiving and discharge chambers of said aerator, substantially as-described.

3. The apparatus for heating and aerating milk comprising the open-topped receptacle 1 divided by the partition 2 into the receiving-chamber ct and the discharging-chamber c, the heater directly below the aerator 1 comprising the shell 6 with the tube-sheets Sand IIC IZO

10, the bottom ohamberb with removable cap with the chambers 2O and 21, all for eopei 11, the tubes 10 connecting the chambers ct, ation substantially as described. 1o b and c as described, the Water-circulating l In testimony whereof. I aix my signature pipe 16 connecting the opposite end portions in presence of two witnesses.

5 of the shell 6, the steam-supply pipe 17 tztp- Y GEORGE F. SIMMONDS.

ping the Water-circulating pipe 16 and dis- Witnesses: charging therein in the direction of the Wa- M. M. MCGRORY,

ter movement5 as described,- and the pipe 19 JAS. F. W'ILLIAMSON; 

